It's hard to get your mind around opportunity cost. It's kind of staggering when you realize you could be doing literally anything at this moment.
Intellectually, sure, easy to get the mind around. But the full depth of that statement is pretty intense.
And if you're pretty good at -- something, anything really -- then the time you spend screwing around comes at a rather high price. Hopefully you're genuinely enjoying it.
But above and beyond that, opportunity cost hits hard when you spend time finicking over something that's good enough. When you wind up doing only 1/3rd of the actions you could because you're overthinking/overacting, it's really expensive.
Really, really, really expensive.